High-low misalignment tolerance
Mismatch tolerance is the maximum allowable offset of two joined plate edges in the weld joint. Exceeding it leads to unacceptable bending stresses and notching effects in the weld area.
Physical-chemical mechanism of action
Offset tolerance determines how much the edges of two sheet metal pieces may shift in the weld joint. An excessive offset leads to stresses and notching in the weld area, which impairs strength and mechanical performance.
Metallurgical relevance & risks in welding
An excessive offset can cause the following problems: unacceptable bending stresses, notching in the weld area, reduced strength, and increased susceptibility to cracking. This can significantly affect the service life and reliability of the welded joint.
Workshop practice & action instructions
To respect the offset tolerance, the following measures should be taken:
• Make sure the sheet edges are straight and parallel before welding.
• Use a suitable welding method and parameters to keep the offset minimal.
• After welding, inspect the weld with a microscope for unacceptable notching or stresses.